'''hashouse=input("你有房子吗？Y/N\n")#使用AND
money=input("你有钱吗？Y/N\n")
handsome=input("你帅吗？Y/N\n")
if hashouse=="Y" and money=="Y" and handsome=="Y":
	print("相处试试吧")
print("程序结束")
'''
'''num=400
if not num>0 and num<100:
	print(num)	
print("程序结束")	
	
'''
age=int (input("输入年龄：\n"))#if else
if age>=18:
	print("成年人请进")
else:
	print("小屁孩儿")
print("程序结束")	